Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

The Mu2e Digitizer ReAdout Controller (DiRAC): characterization and radiation hardness

Conference ·
The Mu2e experiment at Fermilab will search for the neutrino-less coherent conversion of a muon into an electron in the field of a nucleus. Mu2e detectors comprise a straw tracker, an electromagnetic calorimeter and a veto for cosmic rays. The calorimeter employs 1348 Cesium Iodide crystals readout by silicon photo-multipliers and fast front-end, and digitization electronics. The digitization board is named DiRAC (Digitizer ReAdout Controller) and 140 cards are needed for the readout of the full calorimeter. The DiRACs are hosted in crates located on the external surface of calorimeter disks, inside the detector solenoid cryostat and must sustain very high radiation and magnetic field so it was necessary to fully qualify it. Several version of prototypes were validated for operation in a high-vacuum (10−4 Torr) and under a 1T magnetic field. An extensive radiation hardness qualification campaign, carried out with photons, 14 MeV neutron beams, and 200 MeV protons, certified the DiRAC design to sustain doses up to 12 Krad, neutron fluences up to ∼ 1011 1 MeV neq/cm2, and very low occurrences of single-event effects. The qualification campaigns and quality assurance procedures will be reviewed.
Research Organization:
Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP) (SC-25)
Contributing Organization:
Mu2e
DOE Contract Number:
AC02-07CH11359
OSTI ID:
2446894
Report Number(s):
FERMILAB-CONF-24-0361-V; oai:inspirehep.net:2827595
Country of Publication:
United States
Language:
English

Similar Records

Status of the Mu2e calorimeter readout electronics
Conference · Mon Apr 14 00:00:00 EDT 2025 · OSTI ID:2562841

The Readout Electronics of the Mu2e Electromagnetic Calorimeter
Conference · Sun Mar 06 23:00:00 EST 2022 · PoS - Proceedings of Science · OSTI ID:1873713

Components Qualification for a Possible use in the Mu2e Calorimeter Waveform Digitizer
Conference · Thu Mar 30 00:00:00 EDT 2017 · JINST · OSTI ID:1410429